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4-amino-m-benzenedisulfonic Acid

    Name:
    4-amino-m-benzenedisulfonic Acid
    Detailed information:
    Chemistry name:aniline-2,4-disulfonic acid
    M Formula:C6H3NH2(SO3H)2·2H2O
     
    Properties:
    Needles decompose when heated above 120C. Very soluble in water and alcohol.
     
    Derivation:
    By heating sulfanilic acid with fuming sulfuric acid at 170–180C.
     
    Use:
    Dye intermediate.
     

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